List of top Chemistry Questions asked in JEE Advanced

For a first order reaction, $A\rightarrow P$, the temperature $(T)$ dependent rate constant $(k)$ was found to follow the equation: $log\, k= (-2000)\frac {1}{T}+6.0$. The pre-exponential factor $A$ and the activation energy $E_a$, respectively, are
Given that the abundant of isotope $^{54}Fe$, $^{56}Fe$ and $^{57}Fe$ are $5\%$, $90\%$ and $5\%$ respectively, the atomic mass of $Fe$ is :
The spin only magnetic moment value (in $ $B.M.$ $ unit) of $ Cr(CO)_{6} $ is
The nitrogen oxide(s) that contain(s) $N-N$ bond(s) is/are i)$N_2O$ ii) $N_2O_3$ iii) $N_2O_4$ iv) $N_2O_5$
In the following carbocation; $H/CH_3$ that is most likely to migrate to the positively charged carbon is
The correct stability order of the following resonance structure is (I) $H_2C = _{N}^{+} = _{N}^{-} \, \, \, \, $ (II) $ H_2 \, _{C}^{+} - N = _{N}^{-}$ (c) $H_2 \, _{C}^{-} - _{N}^{+} = N \, \, \, \, $ (IV) $H_2 {C}^{-} - N = N $
The reaction of $P_4$ with $X$ leads selectively to $P_4O_6$. The $X$, is
The correct statement(s) about the compound $H_3C(HO)HC-CH=CH-CH(OH)CH_3(X) $ is/are
In the reaction, $2X + B_2H_6 \longrightarrow [BH_2(X)_2] [BH_4] $ the amine(s) X is/are
For the reduction of $NO^-_3$ ion in an aqueous solution $E^\circ$ is $+ \,0.96\, V$. Values of $E^\circ$ for some metal ions are given below $\, V^{2+}(aq)+2e^- \longrightarrow V;\, \, \, \, \, E^\circ = -1.19\, Vtt$ $\, Fe^{3+}(aq)+3e^- \longrightarrow Fe;\, \, \, \, \, E^\circ = -0.04 V$ $ Au^{3+}(aq)+3e^- \longrightarrow Au;\, \, \, \, \, E^\circ = +1.40\, V$ $ Hg^{2+}(aq)+2e^- \longrightarrow Hg;\, \, \, \, \, E^\circ = +0.86 V$ The pair(s) of metals that is/are oxidised by $NO^-_3$ in aqueous solution is (are)
The term that corrects for the attractive forces present in a real gas in the van der Waals' equation is
Electrolysis of dilute aqueous $NaCl$ solution was carried out by passing $10\, mA$ current. The time required to liberate $0.01\, mole$ of $H_2$ gas at the cathode is $(1 \,F\,= 96500 \,C \,mol^{-1})$
The correct statement(s) about the compound given below is/are
Solubility product constant ( $K_{sp}$ )of salts of types $ MX_1, MX_ 2 \, and \, M_3 \, X $ at temperature -T are $ 4.0 \times 10^ { - 8 } , \, 3.2 \times 10^{ - 14 } $ and $ 2.7 \times 10^{ - 15 }$, respectively. Solubilities (mol dm$^{- 3}$ ) of the salts at temperature T" are in the order
The correct stability order for the following species is
Aqueous solution of $Na_2S_2O_3$ on reaction with $Cl_2$ gives
A solution of colourless salt $H$ on boiling with excess $NaOH$ produces a non-flammable gas. The gas evolution ceases after sometime. Upon addition of $Zn$ dust to the same solution, the gas evolution restarts. The colourless salt(s) $H$
The correct statement(s) concerning the structures $E, F$ and $G$ is/are
2.5 ml of . $ \frac{ 2 }{ 5 } $ M weak monoacidic base $ ( K_p = 1 \times 10^{ - 12 } \, at \, 25^\circ$ C) is titrated with $ \frac{ 2 }{ 1 5 } $ M HCI in water at $ 25^\circ$ C. The concentration of H ' at equivalence point is $ ( K_{ sp } = 1 \times 10^{ - 14 } \, at \, 25^\circ C) $
The IUPAC name of $ [Ni(NH_3 )_4][NiCl_4]$ is
Among the following surfactant that will form micelles in aqueous solution at the lowest molar concentration at ambient conditions is
A gas described by van der Waals' equation
Among the following, the coloured compound is
Native silver metal forms a water soluble complex with a dilute aqueous solution of $NaCN$ in the presence of
Hyperconjugation involves overlap of the following orbitals